Thumpr 243/257 Hydraulic Flat Cam for Chevrolet Big Block 396-454
treet/strip, needs 9.5:1 compression, 2800+ stall, intake, gears and headers, very rough idle. *BBC 1965-66 396 c.i. models have an oiling groove in the rear journal. The listed part numbered cams will not fit these models, so if you require a camshaft with the oiling groove
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